<?php
/**
 * Zend Framework
 * LICENSE
 * This source file is subject to the new BSD license that is bundled
 * with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://framework.zend.com/license/new-bsd
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@zend.com so we can send you a copy immediately.
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 * @version $Id: Int.php 24593 2012-01-05 20:35:02Z matthew $
 */
/**
 *
 * @see Zend_Validate_Abstract
 */
require_once 'Zend/Validate/Abstract.php';
/**
 *
 * @see Zend_Locale_Format
 */
require_once 'Zend/Locale/Format.php';

/**
 *
 * @category Zend
 * @package Zend_Validate
 * @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
 * @license http://framework.zend.com/license/new-bsd New BSD License
 */
class Zend_Validate_Int extends Zend_Validate_Abstract {

    const INVALID = 'intInvalid';

    const NOT_INT = 'notInt';

    /**
     *
     * @var array
     */
    protected $_messageTemplates = array(self::INVALID => "Invalid type given. String or integer expected", self::NOT_INT => "'%value%' does not appear to be an integer");

    protected $_locale;

    /**
     * Constructor for the integer validator
     * @param string|Zend_Config|Zend_Locale $locale
     */
    public function __construct ($locale = null) {
        if ($locale instanceof Zend_Config) {
            $locale = $locale -> toArray ();
        }
        if (is_array ($locale)) {
            if (array_key_exists ('locale', $locale)) {
                $locale = $locale['locale'];
            } else {
                $locale = null;
            }
        }
        if (empty ($locale)) {
            require_once 'Zend/Registry.php';
            if (Zend_Registry::isRegistered ('Zend_Locale')) {
                $locale = Zend_Registry::get ('Zend_Locale');
            }
        }
        if ($locale !== null) {
            $this -> setLocale ($locale);
        }
    }

    /**
     * Returns the set locale
     */
    public function getLocale () {
        return $this -> _locale;
    }

    /**
     * Sets the locale to use
     * @param string|Zend_Locale $locale
     */
    public function setLocale ($locale = null) {
        require_once 'Zend/Locale.php';
        $this -> _locale = Zend_Locale::findLocale ($locale);
        return $this;
    }

    /**
     * Defined by Zend_Validate_Interface
     * Returns true if and only if $value is a valid integer
     * @param string|integer $value
     * @return boolean
     */
    public function isValid ($value) {
        if ( ! is_string ($value) &&  ! is_int ($value) &&  ! is_float ($value)) {
            $this -> _error (self::INVALID);
            return false;
        }
        if (is_int ($value)) {
            return true;
        }
        $this -> _setValue ($value);
        if ($this -> _locale === null) {
            $locale = localeconv ();
            $valueFiltered = str_replace ($locale['decimal_point'], '.', $value);
            $valueFiltered = str_replace ($locale['thousands_sep'], '', $valueFiltered);
            if (strval (intval ($valueFiltered)) != $valueFiltered) {
                $this -> _error (self::NOT_INT);
                return false;
            }
        } else {
            try {
                if ( ! Zend_Locale_Format::isInteger ($value, array('locale' => $this -> _locale))) {
                    $this -> _error (self::NOT_INT);
                    return false;
                }
            } catch (Zend_Locale_Exception $e) {
                $this -> _error (self::NOT_INT);
                return false;
            }
        }
        return true;
    }

}
